This happened to me today on a major highway. The Ford garage told me it is a transmission problem. Check transmission problem solutions here in this blog. Solenoids, etc. It means your transmission is slipping, that happens in a lot of Mercury mystiques. not all true there is a throttle position sensor or T.P.S. on your throttlebody try that its way cheaper than transmission
the rpm is 5700
If you're talking engine rpm, cruising down the highway doing the 65 mph speed limit, an average rpm would probably be 2000 to 2200.
My 115 EFI mercury outboard would only generate 4200 RPM. The power gradually reduced and finally levelled off at 2400 RPM. I have had other problems in the past relating to power settings. Fuel injectors and impellor have been eliminated as potential causes.
what is wrong with my rpm it goes up and down
possibly bad distributer
Idle speed is set by the PCM and IS NOT ADJUSTABLE.
Sounds like the brushes are worn down in the alternator.
There are several reasons that the rpm of a power generator is going down. The rpm going down could cause damage to the motor if it is not fixed. To find the exact reason why this is happening review your user manual.
A 2003 Mercury 115 that runs rough at a low rpm might be having a problem with the MAP Sensor or the Oxygen Sensor. The MAP Sensor is going to be the easiest one to replace because it is usually located plugged into the EFI (Electronic Fuel Injector), a fancy would for carburetor.
09 chevy impala rpm jumps up and down
Rpm stands for revolutions per minute. This is talking about the revolutions the crankshaft goes per minute. The faster you go to more revoultions that are accomplished. Therefore the faster you go, the rpm goes up. And as you slow down it goes down.
No, but why would you?
4800-5200 RPM according to the manual
~6900 rpm. Never rev it above 3500 in neutral
vacuum leak. my 95 Monte Carlo did it. once in a while it would race to 2500 rpm then settle down like normal. not easy to find , but a cheap fix.
It is not so much the proper RPM but the difference in RPM between gears. If you up shift at 1800 and going in next gear you are at 1200, then you have a 600 RPM split between gears. So downshifting you would be around 1200 and would while floating gears or double clutching bring the RPM's up to 1800-1900. Many trucks have RPM range stckers on the visors my old Mack was 1050-1750, that's a 700 RPM range, I would down shift when I hit 1050-1150, at 1150 I would have to bring the RPM's up to about 1850 to get it to go into gear.
it sounds like your low on freon. the idle kicks up to comensate for the extra load from the compressor . if its low on freon the compressor short cycles causing the eratic idle
According to my Chilton's Auto Repair Manual : For a 1987 Mercury Grand Marquis : The 5.0 liter / 302 cubic inch V8 is rated at ( 150 horsepower at 3200 RPM and 270 ft.lbs. torque at 2000 RPM ) The 5.8 liter / 351 cubic inch V8 is rated at ( 180 horsepower at 3600 RPM and 285 ft.lbs. torque at 2400 RPM )
Im guessing it would be a bad idler.
check crank sensor and air mass meter.
The maximum speed of the mercury monterey automatic 8cyl 330hp 1958 is called 3000 rpm.
if it drives normal except when you let off the gas the rpm jumps then it is a map sensor